Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 8 15.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/17/2021   15:50:46   ( -68.81, 120.36) 08/17/2021   15:51:50  ( -68.79, 120.35)    1.82                64
 08/17/2021   16:41:30   (  68.67, -72.15) 08/17/2021   16:41:17  (  68.68, -72.14)    0.86                13
 08/17/2021   17:32:04   ( -68.17,  95.82) 08/17/2021   17:30:53  ( -68.23,  94.95)   36.88                71
 08/20/2021   08:07:41   ( -68.77,-123.82) 08/20/2021   08:08:16  ( -68.74,-123.83)    2.71                35
 08/20/2021   08:58:25   (  68.64,  43.66) 08/20/2021   08:57:43  (  68.63,  43.67)    1.23                42
 08/22/2021   23:33:59   (  69.03,-175.73) 08/22/2021   23:35:10  (  68.96,-175.31)   18.61                71
 08/23/2021   00:24:37   ( -68.73,  -8.01) 08/23/2021   00:24:42  ( -68.75,  -7.94)    3.08                 5
 08/23/2021   01:15:20   (  68.55, 159.54) 08/23/2021   01:14:10  (  68.57, 159.49)    3.14                70
 08/25/2021   15:50:51   (  68.79, -59.63) 08/25/2021   15:51:39  (  68.80, -59.64)    0.63                48
 08/25/2021   16:41:33   ( -68.70, 107.80) 08/25/2021   16:41:09  ( -68.69, 107.87)    2.67                24
 08/25/2021   17:31:59   (  67.61, -83.50) 08/25/2021   17:30:52  (  67.68, -85.69)   92.98                67
 08/28/2021   07:17:18   ( -69.68,-112.42) 08/28/2021   07:18:26  ( -69.58,-110.39)   79.40                68
 08/28/2021   08:07:47   (  68.76,  56.17) 08/28/2021   08:08:06  (  68.73,  56.17)    3.41                19
 08/28/2021   08:58:28   ( -68.62,-136.32) 08/28/2021   08:57:36  ( -68.63,-136.32)    2.05                52